Bulaoro, 24, was zipped inside a sleeping bag in his SUV, which was left in a grocery store parking lot. The charges accuse Coset of using a gun and a knife in the slaying.

The criminal complaint, filed Friday, accuses Coset of killing Bulaoro on Dec. 21 — the last day Bulaoro’s family saw him.

A few days later, Bulaoro’s family reported him missing. Then, on Jan. 3, John Bulaoro found his brother’s Toyota 4-Runner parked in a stall on the far end of a grocery store parking lot in Fallbrook.

Marine Capt. Alex Lim said Monday that Coset is a rifleman with the 1st Marine Division but has not been sent to combat during his time in the service.

Coset’s Facebook page includes a banner stating, “There’s no government like no government.” Among his “likes” is a Facebook page dubbed, “We stand with Christopher Dorner.”

Dorner, a former Los Angeles police officer, killed four people in a rampage this month before committing suicide during a standoff with law enforcement at a Big Bear Lake cabin. Dorner had railed against the Los Angeles Police Department, saying he was fired in retaliation for reporting his training officer kicked a suspect.

Authorities have not said whether Coset and Bulaoro knew each other, nor have they offered a motive for the killing. The affidavit supporting Coset’s arrest warrant has been sealed by the court.

Bulaoro, a Fallbrook resident, was a second lieutenant assigned to the Medical Services Corps in the Army Reserve, which he joined in November 2011.

John Bulaoro said his brother also worked as the administrator of the family’s business, AA Sofia Home-care, an elder-care facility run out of the family’s house.